Detailed Explanation of MQTT Packets【02】: PUBLISH & PUBACK
In the previous issue, we introduced the CONNECT and CONNACK packets of MQTT 5.0:Detailed Explanation of MQTT Packets【01】: CONNECT & CONNACKNow, we will introduce the PUBLISH packet used for transmitting application messages in MQTT and its response packet.Whether the client publishes messages to the server or the server forwards messages to subscribers, the PUBLISH packet … Read more